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node_wasi.h
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node_wasi.h
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#ifndef SRC_NODE_WASI_H_
#define SRC_NODE_WASI_H_
#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
#include "base_object.h"
#include "node_mem.h"
#include "uvwasi.h"
namespace node {
namespace wasi {
struct WasmMemory {
char* data;
size_t size;
};
class WASI : public BaseObject,
public mem::NgLibMemoryManager<WASI, uvwasi_mem_t> {
public:
WASI(Environment* env,
v8::Local<v8::Object> object,
uvwasi_options_t* options);
static void New(const v8::FunctionCallbackInfo<v8::Value>& args);
void MemoryInfo(MemoryTracker* tracker) const override;
SET_MEMORY_INFO_NAME(WASI)
SET_SELF_SIZE(WASI)
static uint32_t ArgsGet(WASI&, WasmMemory, uint32_t, uint32_t);
static uint32_t ArgsSizesGet(WASI&, WasmMemory, uint32_t, uint32_t);
static uint32_t ClockResGet(WASI&, WasmMemory, uint32_t, uint32_t);
static uint32_t ClockTimeGet(WASI&, WasmMemory, uint32_t, uint64_t, uint32_t);
static uint32_t EnvironGet(WASI&, WasmMemory, uint32_t, uint32_t);
static uint32_t EnvironSizesGet(WASI&, WasmMemory, uint32_t, uint32_t);
static uint32_t FdAdvise(
WASI&, WasmMemory, uint32_t, uint64_t, uint64_t, uint32_t);
static uint32_t FdAllocate(WASI&, WasmMemory, uint32_t, uint64_t, uint64_t);
static uint32_t FdClose(WASI&, WasmMemory, uint32_t);
static uint32_t FdDatasync(WASI&, WasmMemory, uint32_t);
static uint32_t FdFdstatGet(WASI&, WasmMemory, uint32_t, uint32_t);
static uint32_t FdFdstatSetFlags(WASI&, WasmMemory, uint32_t, uint32_t);
static uint32_t FdFdstatSetRights(
WASI&, WasmMemory, uint32_t, uint64_t, uint64_t);
static uint32_t FdFilestatGet(WASI&, WasmMemory, uint32_t, uint32_t);
static uint32_t FdFilestatSetSize(WASI&, WasmMemory, uint32_t, uint64_t);
static uint32_t FdFilestatSetTimes(
WASI&, WasmMemory, uint32_t, uint64_t, uint64_t, uint32_t);
static uint32_t FdPread(WASI&,
WasmMemory memory,
uint32_t,
uint32_t,
uint32_t,
uint64_t,
uint32_t);
static uint32_t FdPrestatGet(WASI&, WasmMemory, uint32_t, uint32_t);
static uint32_t FdPrestatDirName(
WASI&, WasmMemory, uint32_t, uint32_t, uint32_t);
static uint32_t FdPwrite(
WASI&, WasmMemory, uint32_t, uint32_t, uint32_t, uint64_t, uint32_t);
static void FdRead(const v8::FunctionCallbackInfo<v8::Value>& args);
static void FdReaddir(const v8::FunctionCallbackInfo<v8::Value>& args);
static void FdRenumber(const v8::FunctionCallbackInfo<v8::Value>& args);
static uint32_t FdSeek(
WASI&, WasmMemory, uint32_t, int64_t, uint32_t, uint32_t);
static void FdSync(const v8::FunctionCallbackInfo<v8::Value>& args);
static void FdTell(const v8::FunctionCallbackInfo<v8::Value>& args);
static void FdWrite(const v8::FunctionCallbackInfo<v8::Value>& args);
static void PathCreateDirectory(
const v8::FunctionCallbackInfo<v8::Value>& args);
static void PathFilestatGet(const v8::FunctionCallbackInfo<v8::Value>& args);
static void PathFilestatSetTimes(
const v8::FunctionCallbackInfo<v8::Value>& args);
static void PathLink(const v8::FunctionCallbackInfo<v8::Value>& args);
static void PathOpen(const v8::FunctionCallbackInfo<v8::Value>& args);
static void PathReadlink(const v8::FunctionCallbackInfo<v8::Value>& args);
static void PathRemoveDirectory(
const v8::FunctionCallbackInfo<v8::Value>& args);
static void PathRename(const v8::FunctionCallbackInfo<v8::Value>& args);
static void PathSymlink(const v8::FunctionCallbackInfo<v8::Value>& args);
static void PathUnlinkFile(const v8::FunctionCallbackInfo<v8::Value>& args);
static void PollOneoff(const v8::FunctionCallbackInfo<v8::Value>& args);
static void ProcExit(const v8::FunctionCallbackInfo<v8::Value>& args);
static void ProcRaise(const v8::FunctionCallbackInfo<v8::Value>& args);
static uint32_t RandomGet(WASI&, WasmMemory, uint32_t, uint32_t);
static uint32_t SchedYield(WASI&, WasmMemory);
static uint32_t SockRecv(WASI&,
WasmMemory,
uint32_t,
uint32_t,
uint32_t,
uint32_t,
uint32_t,
uint32_t);
static uint32_t SockSend(
WASI&, WasmMemory, uint32_t, uint32_t, uint32_t, uint32_t, uint32_t);
static uint32_t SockShutdown(WASI&, WasmMemory, uint32_t, uint32_t);
static void _SetMemory(const v8::FunctionCallbackInfo<v8::Value>& args);
// Implementation for mem::NgLibMemoryManager
void CheckAllocatedSize(size_t previous_size) const;
void IncreaseAllocatedSize(size_t size);
void DecreaseAllocatedSize(size_t size);
// <typename FT, FT F> as a C++14 desugaring of `<auto F>`
template <typename FT, FT F, typename R, typename... Args>
class WasiFunction {
public:
static void SetFunction(Environment*,
const char*,
v8::Local<v8::FunctionTemplate>);
private:
static R FastCallback(v8::Local<v8::Object> receiver,
Args...,
v8::FastApiCallbackOptions&);
static void SlowCallback(const v8::FunctionCallbackInfo<v8::Value>&);
// Another hack, SlowCallback is just a dumb wrapper that expands
// `InnerSlowCallback<Indices...>` from `Args...` :(
template <size_t... Indices>
static void InnerSlowCallback(std::index_sequence<Indices...>,
const v8::FunctionCallbackInfo<v8::Value>&);
};
private:
~WASI() override;
uvwasi_t uvw_;
v8::Global<v8::WasmMemoryObject> memory_;
uvwasi_mem_t alloc_info_;
size_t current_uvwasi_memory_ = 0;
};
} // namespace wasi
} // namespace node
#endif // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
#endif // SRC_NODE_WASI_H_